Yellow-bellied Bush Warbler

Horornis acanthizoides

The Yellow-bellied Bush Warbler (Horornis acanthizoides) is a small, cryptic passerine, typically measuring 10-12 cm (4-4.7 inches) in length and weighing between 7.5-12.5 grams. It exhibits a rather plain yet charming appearance with olive-brown upperparts, a distinct yellowish wash on its underparts, and often a pale supercilium contrasting with a darker loral stripe. This skulking species is often identified more by its loud, explosive song than by sight, making its vocalizations a key fie...

Habitat

This species primarily inhabits dense undergrowth of broadleaf, mixed, or coniferous forests, as well as bamboo thickets and shrubbery. It is typically found in montane and submontane regions, ranging from around 600 meters up to 3,000 meters in elevation.

Diet

Its diet consists mainly of small insects, including beetles, caterpillars, and flies, as well as spiders. It forages by gleaning arthropods from foliage and branches.

Behavior

The Yellow-bellied Bush Warbler is a highly secretive and skulking diurnal species, spending most of its time hidden within dense vegetation, often close to the ground. It forages by gleaning small insects, spiders, and larvae from leaves, twigs, and bark, methodically working its way through thi...

Range

The Yellow-bellied Bush Warbler has a wide distribution across eastern and southeastern Asia. Its breeding range extends from the Himalayas (northern India, Nepal, Bhutan, and Myanmar) eastward through central and southern China, South Korea, Japan, and Taiwan. It is largely resident throughout m...

Conservation Status

Least Concern

Fun Facts

- Despite its small size, the Yellow-bellied Bush Warbler possesses an incredibly loud and distinctive song, often described as explosive. - It is a master of camouflage and skulking, frequently heard but very rarely seen, making a visual identification a prize for birders. - Its scientific name,...

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